hey there @Former-Member Sorry the feelings are being so hard for you right now. Any chance of being able to talk to someone to help with not carrying out those steps?
I'll be thinking of you today while I'm out helping my flatmate with their stuff. Please take care of you. 
Edit: sorry love, was typing and didnt' see your tag til posting. I dont' mind the tag or the question either.
Firstly, it doesnt' matter if you're 'overreacting', that's someone else's judgement of what the situation means, it's not an accurate reflection of how you feel about it.
Next, you might find it really useful for you, some of those lines have very skilled people who also know from experiences of their own what the type of devastation you're feeling is like.
I've used a couple of different phone services in the past and found just being able to talk to someone quite helpful.
I'd advise you to give it a go, I know it will be hard to do. I always have a pen and pad with me so if I want to remember to say something, or want to remember something that was said I can jot down notes.
You can do this @Former-Member